Home / 15,987.04-22,061.82-8,913.88

Finding the Fourth Proportional to 15,987.04, 22,061.82 and 8,913.88

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Solution

The fourth proportional to 15,987.04, 22,061.82 and 8,913.88 is: 12,300.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,987.04 : 22,061.82 = 8,913.88 : x
  2. Step 2: Convert to fraction form
    15,987.04/22,061.82 = 8,913.88/x
  3. Step 3: Cross multiply
    15,987.04x = 22,061.82 × 8,913.88
  4. Step 4: Simplify right side
    15,987.04x = 196,656,416.06
  5. Step 5: Solve for x
    x = 196,656,416.06/15,987.04
  6. Step 6: Final answer
    x = 12,300.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.